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15-03-2022
Physics

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Ben lifts his 12kg daughter in the air from the ground to a height of 2.2m. How much work has he done? (Remember that weight = mass x gravitational field strength. Assume that g=10N/kg)

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meee8405 meee8405

15-03-2022

W= mg × d × cosx

W= 12 × 10 × 2.2 × (-1)= -264 J

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